From: Liping Zhang <liping.zhang@xxxxxxxxxxxxxx>
This will avoid the following ugly display output:
[ log prefix (null) ]
Signed-off-by: Liping Zhang <liping.zhang@xxxxxxxxxxxxxx>
---
src/expr/log.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/expr/log.c b/src/expr/log.c
index e965448..a231bac 100644
--- a/src/expr/log.c
+++ b/src/expr/log.c
@@ -230,8 +230,10 @@ static int nftnl_expr_log_snprintf_default(char *buf, size_t size,
struct nftnl_expr_log *log = nftnl_expr_data(e);
int ret, offset = 0, len = size;
- ret = snprintf(buf, len, "prefix %s ", log->prefix);
- SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
+ if (e->flags & (1 << NFTNL_EXPR_LOG_PREFIX)) {
+ ret = snprintf(buf, len, "prefix %s ", log->prefix);
+ SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
+ }
if (e->flags & (1 << NFTNL_EXPR_LOG_GROUP)) {
ret = snprintf(buf + offset, len,
--
2.5.5
--
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